Two Thursdays ago my Beetle gave trouble starting once the Glow Plug light came on it started. It did good all day stopped and started five or six times, then nothing. Again the glow plug light did not come on. I changed glow plugs today turned the key light came on but plugs were not connected. I connected the plugs and started the car. Shut it off and started it twice after. After letting sit for a while now again no Light and no start. Any suggestions as to what may be going? Oh, and also swapped out the relay and that did nothing.